Hello all,

I'm very new to PD, so please excuse my limited knowledge in all things PD.

My project involves adding an audio delay to an existing video workstation (to sync video and audio).
I use a raspberry Pi + USB audio interface to accomplish this.
Making this is PD proved to be very simple. (delwrite and delread)
The Rapsberry will be running headless next to the workstation.

What I am struggling with is how the user could alter the delay value remotely from the workstation?

Eg, what ways are there to send values from another computer, that PD can interpret as a new value for "delread"?

I was thinking along the lines of a simple web interface, where values can be put in, but I have no idea how to send these to PD?

Thank you for your help!

@alex.vyverman You just need to send and receive (tcp or udp) using [netsend] and [netreceive] objects and specifying the port on the Rpi that you want to use to receive the data. If you are using extended then look at this..........
02.netsend_netreceive.pd
which is in the "pd/doc/manuals/networking" folder.
If you are using vanilla open........ [netsend-help]
netsend-help.pd
which is in "pd/doc/5.reference"
David

Thank you for your reply David!

Is there a way that you or anyone knows of, that instead of using a PD patch on the sender side to send the message, you can use a website instead? (sending data to the same port/ip)

Kind regards,
Alex

@alex.vyverman Yes, but the first hurdle will be to know the actual packet format of [netsend]. ... (header, etc.). Someone might know that and post here.

It could be easier to use the higher level message format "osc", although of course you will need to be able to send such messages from your webpage, and you need your Rpi to serve up the webpage in the first place (i.e. set up a server on your Rpi)..... Google will be your friend....
If you want to do this over the internet then you will need a fixed IP and to open necessary router ports as well.
Search around inside your copy of Pd for osc objects.

A simpler solution...... an app that already sends osc messages (like "TouchOSC".... ios and android), and the Rpi just receiving them on an open port.
David.